121872532 has 12 divisors (see below), whose sum is σ = 220157056. Its totient is φ = 58970520.

The previous prime is 121872481. The next prime is 121872539. The reversal of 121872532 is 235278121.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 121872494 and 121872503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121872539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491298 + ... + 491545.

Almost surely, 2^121872532 is an apocalyptic number.

It is an amenable number.

121872532 is a deficient number, since it is larger than the sum of its proper divisors (98284524).

121872532 is a wasteful number, since it uses less digits than its factorization.

121872532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982878 (or 982876 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 121872532 is about 11039.5893039551. The cubic root of 121872532 is about 495.7947739679.

The spelling of 121872532 in words is "one hundred twenty-one million, eight hundred seventy-two thousand, five hundred thirty-two".